Yes we run 17.5 at Bedworth alongside 27t brushed motors which up till now seems to be working extreamly well.
There was some concern over the turbo speedos in this class which we are keeping an eye on but up till now there seems no problem, checking over old results in the 27t class from a few years ago the track record is 19laps in about 314, the fastest 17.5 so far is 18 in 304, you also have to take into account that the old 27t guys were running at 1500g not 1350g plus they had Nimi cells not Lipos which did drop of quite bad during a run.
We are prity confident that if the old 27t guys had Lipos and could run at 1350g they would have gone much quicker and would probably of been doing low 19 lappers (306, 308 or roundabouts).
When the 17.5 guys start thrashing the old times maybe we will have to do something but at present its OK.
Some talk has gone on about going to 21.5 (on another forum) think this would be a big mistake, you need to gear a 17.5 at about 3.5 overall at Bedworth this requires very small spurs and big pinions, old cars like the TC3/4 with there high internal ratios strugle to do this, can only guess that a 21.5 would need gearing about 2.5 to 3 overall, think even some of the modern cars may struggle to acheave this.
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